| 摘要 |
PURPOSE:To decrease distortion received from a transmission line by decreasing the amplitude ratio of a modulated carrier band signal. CONSTITUTION:A transmission differential logical circuit 11 applies a 4-phase transmission differential conversion to input signals S11,S12 to output a (p) signal D1 and a (q) signal D2, and a transmission logic converting section 12 converts a (p) signal (S21,S31,S41).(q) signal (S22,S32,S42) into a TCONT.(p) signal (S'21,S'31,S'41).(q) signal (S'22,S'32,S'42).(p) signal H1.(q) signal H2l. Then a trans mission path selection section 13 outputs (p-) signal (S21-).(q) signal (S22-) or (p) signal (S'21-).(q) signal (S'22-) for selection, and a code conversion section 14 outputs (p) signal E1.(q) signal E2. Then a code conversion section 15 outputs a (p) signal (D1-D3D'3E4) or a (q) signal (D1-D3D'3E4) and a D-A converting section 16 converts them into a multi-value signal. |
